Accession Number : ADA302950

Title :   3-D Finite Element Method for Micromechanical Analysis in Fibrous Composite Material.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s) : Cheng, Chun-Chun

PDF Url : ADA302950

Report Date : JUN 1995

Pagination or Media Count : 59

Abstract : The objective of this thesis was to study whether simplified three dimensional finite element models could be used as a micromechanical model for analysis of stresses at the fiber and matrix level while providing smeared composite properties for the global structural analysis. The mathematical model was programmed using the MATLAB engineering software. For considering interface cracks between the fiber and matrix, springs were modeled in the connecting nodes between the fiber and matrix on each of the three degrees of freedom. When results were compared with experimental data, findings proved that the simplified three dimensional finite element models could simulate the material property of the graphite/epoxy composite very efficiently. (AN)

Descriptors :   *FINITE ELEMENT ANALYSIS, *MATRIX MATERIALS, *MICROMECHANICS, *GRAPHITE EPOXY COMPOSITES, STRESS STRAIN RELATIONS, MATHEMATICAL MODELS, FIBERS, STRESS ANALYSIS, STRUCTURAL ANALYSIS, SHEAR MODULUS, CRACKS, FIBER REINFORCED COMPOSITES, MODULUS OF ELASTICITY, THESES, COMPOSITE STRUCTURES, MATHEMATICAL PROGRAMMING, THREE DIMENSIONAL, SHEAR STRESSES, MICROANALYSIS.

Subject Categories : Laminates and Composite Materials
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE